Electrical extension chandelier



(Nu Model.) 2 sheets-sheet 1. S. BERGMANN.

ELECIRIGAL BXTENSION UHANDBLIBR. No. 262,272. ,J Patented Aug. 8. 1882 WITNESSES: f INVENTOR:

ATTORNBY.

(No Model.) w ZSheets-Sheet 2'. S. BERGMANN;

ELEGTRIGAL BXTENSION GHANDBLIR. No. 262,272. /Patented Aug. 8,1882.

WITNEssEs; INVBNToRz BY. w/

ATTORNEY.

`- Nrten STATES PATENT Price.

SIGMUND BERGMANN, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO EDVVARD H. JOHNSON, OF SAME PLAOE.

ELECTRICAL EXTENSlON-CHANDELIER.

SPECIFICATION forming' part of Letters Patent No. 262,272, dated August 8, 1882.

(No model.)

T o all whom tt may conccrn:

Be it known that I, SIGMUND BERGMANN, of the city, county, and State of New York, have invented a certain new and useful Improvement in Electrical Extension -Chande liers, of which the following' is a specification.

The object I have in view is to produce a sliding, drop, or extension chandelier for carrying electric lamps, which will be simple, compact, and ornamental in construction and efficient in operation, will not have any conducting parts exposed to view or external contact, and will be capable of a rotary as well as a sliding movement.

The featuresof invention are fully hereinafter explaincd, and are pointed out by the claims.

In the accompanying' drawing's, forming a part hereof, Figure lis an elevation of a chandelier embodying my invention; Fig. 2, asectional view on a central Vertical line of the main part or section of the same; Fig. 3, a plan view of the upper end of this main section, and Fig. 4 a separate View of the contact-springs.

Like letters denote corresponding' parts in all four tigures.

A represents the outside tubing of the main or lower section of the chandelier. It carries near its lower end the main body B of the chandelier, which receives the wires 1 2 from the inside of the tube A through openings a. This body has a wood block, O, upon which the connections of the wires 3 4 of a number of lamp-arms, l), with the chandelier-wires 1 2 are made. The arms b carry stationary lamps D, as shown. The lower side of the body B is closed by a cap, c, of insulating material.

Within the tube A are placed a stationary tube, E, a stationary rod, F, and an intermediate tube, G. The stationary tube E and rod F are secured to ablock, d, ofinsulatingmaterial, which is secured in a shell, e, secured to the upper end of tube A. Both the said tube and rod are kept out of contact with A and e, and also out of contact with each other by the insulating-block d.

TubeE extends nearly, although not quite,

' to the lower'end of tube A, where it is sepa- Upon the lower end of A is screwed a cap, H, and between this cap and the end ofE is placed a packing-ring, (1, of insulating matcrial, cork being' prel'erably used. The sliding tube G passes freely through the cap H, but is hug'g'ed closely by the packing-ring g. The cap H can be so adjusted that there will be sufticient friction of (1 upon G to hold G at any point within the limit of its sliding movement, while allowing an easy movement of G. If the joint becomes loose, it can be made to bind to the desired degree by the screwing up of the cap H.

The use of counterbalancing springs or weightsis avoided by the means just described.

The rod F is held centrally by the block d, and extends within the sliding' tube G to about the lower end of tube A, its lower end being' free and not secured. To keep the rod F out of contact with G at its lower end it is provided with an enlarged end, h, of insulating material. This is preferably in the form of a ball, as shown.

The sliding tube Gis provided with a head, I, of insulating material, atits upper end, which head is securely fastened thereto, and has passing centrally through it the rod F, which is thereby kept out of contact with G. This insulating-head 1 carries two metal rings, t' k, one on its outside next to and the other on the inside of the head next to F. The ring i has one or more Springs, Z, projecting' therefromv and making contact with the tube E, while the ring k is provided with Springs m, grasping` the rod F. Vires 5 and 6 are connected with t' and k or l and m, preferably by soldering, and pass down through separate holcs in I into the interior of the sliding tube G, and extend to the lower end of the same. These wires, as all other wires used, are covered with a suitable insulation.

The sliding' tube G carries at its lower end a socket, a, for a lamp, K, and the wires 5 6 are run into such socket and properly connected with its terminals; or the tube G may have a body attached to its lower end, from which one or more arms willproject, carrying sockets and lam ps, the proper connections with IOO with 1 2 to main chandelier-wires 910; or the wires 1 2 and 78 may be run separately through to the top ot' the fixturr.

It Will be seen that the tube E and rod F, which form part of the electric circuit, are coucealed, and that the wires 5 G, running to the drop lamp or lamps, are coucealed within the sliding tube.

The tube G can be drau'n down and pushed up without breaking contact, and it may also be given a rotary movement. Thislatter movement is especially advantageous when the sliding tube supports One or more lateral lamparms.

lt is evident that the parts may be reversed, and the movable portion of the extension-chandelier be made to slide upon instead of within the stationary portion, and that many changes could be made in details of construction without departing` t'rom the spirit of my invention.

Vhat I claim is 1. In an extension -chandelier for electric lamps, the combination, with the stationary and movable' parts sliding one upon or within the other, ot'contacts, as described, permitting a rotary as well as a slidingmovement ot'such movable part, substautially as set forth.

2. In an extension-chaudelier for electric lamps, the combination, with a statiouary tube and stationar;T rod acting as eonductors of opposite polarity, of an intermediate sliding tube carrying,` two sets ofcontact-springs connected with conductors within said slding tube, substantially as set forth.

3. In an extension-chaudelier for electric lamps, the combination, with the external covering-tube, of the statiouary conducting-tube and rod supported at their upper ends by au insulating-block, the intermediate sliding tube having an insulatiug-head through which the rod passes, contact-Springs carried by said in` sulatiug-head and rubbing on stationary tube and rod, insulated conductors passing through said sliding tube and connected with said contact-Springs, and projeeting insulation ou the lower end ot' the central rod, substantially as set forth.

SIGM UND BERG MANN.

Witnesses:

WM. H. MEADoWoaoFT, O. P. Mofr'r. 

